Question: Which prototype has the most stroke?
Paraphrase: There is the most stroke in which prototype?
SPARQL (Wikidata): select ?ent where { ?ent wdt:P31 wd:Q207977 . ?ent wdt:P2557 ?obj } ORDER BY DESC(?obj)LIMIT 5 
Answer: Prussian T 14 (experimental), SNCF 232.P.1